Third

Third or 3rd may refer to:

• 3rd, the ordinal form of the cardinal number 3
• , a fraction of one third
• ¹⁄₆₀ of a second, i.e., the third in a series of fractional parts in a sexagesimal number system

• 3rd meridian east, a line of longitude extending through Europe and Africa
• 3rd meridian west, a line of longitude extending through Europe and Africa
• 3rd parallel north, a circle of latitude above the Equator
• 3rd parallel south, a circle of latitude below the Equator
• 3rd Street (disambiguation)
• Third Avenue (disambiguation)
• Highway 3
• Third Beach, located at Ferguson Point in Stanley Park in Vancouver, British Columbia
• Third Brook, flows into West Brook by Walton, New York

• Interval number of three in a musical interval
• Major third, a third spanning four semitones
• Minor third, a third encompassing three half steps, or semitones
• Neutral third, wider than a minor third but narrower than a major third
• Augmented third, an interval of five semitones
• Diminished third, produced by narrowing a minor third by a chromatic semitone
• Third (chord), chord member a third above the root
• Degree (music), three away from tonic
• Mediant, third degree of the diatonic scale
• Submediant, sixth degree of the diatonic scale – three steps below the tonic
• Chromatic mediant, chromatic relationship by thirds
• Ladder of thirds, similar to the circle of fifths

• Third/Sister Lovers, a 1974 album by Big Star first released in 1978
• Third (Soft Machine album), 1970
• Third (Portishead album), 2008
• Third (Cait Brennan album), a 2017 album by Cait Brennan
• 3rd (The Rasmus EP), 1996
• 3rd (The Baseball Project album), released by The Baseball Project in 2014
• Thirds (album), a 1971 album by the James Gang

• 3rd century
• 3rd century BC

• Third of the month, a recurring calendar date
• Third of January
• Third of February
• Third of March
• Third of April
• Third of May
• Third of June
• Third of July
• Third of August
• Third of September
• Third of October
• Third of November
• Third of December

• Third (play), a 2005 work by Wendy Wasserstein
• Third (curling), a curling position
• Thirds, third-born children in the 1985 novel Ender's Game
• Thirds, a 2007 play by Jacob M. Appel
• Third World, economically underdeveloped nations
• Third-class degree, a type of British undergraduate degree classification
• Third (angle), in astronomy and cartography, fraction of a degree
• Richard Third (1927–2016), Anglican bishop in the Church of England

• 1/3 (disambiguation)
• 3 (disambiguation)
• III (disambiguation)
• Number Three (disambiguation)
• The Third (disambiguation)
• Third base (disambiguation)
• Third degree (disambiguation)
• Third party (disambiguation)
• Third person (disambiguation)
• Third place, concept in sociology
• The Third Album (disambiguation)
• Triad (disambiguation)
• Third grade
• Third Fleet (disambiguation)
• Tierce (disambiguation)